#!/usr/bin/env python2

# Rekall Memory Forensics
# Copyright 2016 Google Inc. All Rights Reserved.
#
# Author: Michael Cohen scudette@google.com
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#

__author__ = "Michael Cohen <scudette@google.com>"

from rekall_agent.flows import collect


class YaraScan(collect.CollectFlow):
    """Run a yara expression over process memory."""

    _query = dict(
        mode_live_memory=(
            "select Owner, Rule, Offset, hexdump, Context from yarascan("
            "yara_expression: {yara_expression}, scan_process_memory: 1)"
        )
    )

    _columns = [
        dict(name="Owner", type="unicode"),
        dict(name="Rule", type="unicode"),
        dict(name="Offset", type="int"),
        dict(name="hexdump", type="binary"),
        dict(name="Context", type="unicode"),
    ]

    _collection_name = "yarascan"
    _collection_type = "yara"
